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X-Ray microtomography - studies of a facemask

Published: 27 August 2020
Bild 1 Mask

A sample of size 2.4 x 3.2 x 1.4 mm (Width, Height, Thickness) was cut from the centre of a face mask and scanned using a 3D X-ray Microscope (Zeiss Xradia 510 Versa) at Luleå University of Technology (LTU). The sample comes from a new commercially available face mask  of protection class FFP2.

Bidl 2 systemet

A sample of size 2.4 x 3.2 x 1.4 mm (Width, Height, Thickness) was cut from the centre of a face mask and scanned using a 3D X-ray Microscope (Zeiss Xradia 510 Versa) at Luleå University of Technology (LTU).
For more information on the system see 3D mikrotomografi.

Bild 5 Skanning
Bild 7 skanning

The results show three different filter layers of varying fiber size distribution. The filter at left hand side (1) has a fiber diameter of approximately 20 𝛍m. The filter in the middle (2) has a finer microstructure with a fiber diameter of 5-10 𝛍m, while the filter at the right hand side (3) is coarser with a fiber diameter of roughtly 30 𝛍m. The spatial resolution in terms of voxel size is 3.7 𝛍m.

Face mask, sample and scan spec

  • Scanned using a 3D X-ray Microscope (Zeiss Xradia 510 Versa) at Luleå University of Technology (LTU)
  • New commercially available face mask (protection class FFP2)
  • Sample size: 2.4 x 3.2 x 1.4 mm (Width, Height, Thickness)
  • Spatial resolution, voxel size: 3.7 μm

Contact

Fredrik Forsberg

Fredrik Forsberg, Senior Lecturer

Phone: +46 (0)920 493085
Organisation: Experimental Mechanics, Fluid and Experimental Mechanics, Department of Engineering Sciences and Mathematics